There were two men who had been a model for James Bond.
One was Dusko Popov, who had served under Ian Fleming during WW2 as a double agent spying on the Axis. Popov, like Bond, was handsome and was a playboy. He dated a Hollywood actress named Simone Simon and other beautiful women. Like Bond, he was also a killer if the need arises. Sometimes, he was faced with instances where he had been discovered. He had to be cool at all times. Unlike Bond, he was unsuccessful in preventing a major incident from happening. He knew about the Japanese plan to attack Pearl Harbor. He had warned the F.B.I. but the F.B.I. dismissed the information because they skeptical about how the information was gathered. Popov warned them in August of 1941.
The second was Sidney Reilly. He was the British Secret Service's best operative and had done many assignments for Queen and country. He was truly the Ace of Spies.
His techniques were used still to this day by the British Secret Service, as well as the C.I.A . and other intelligence agencies around the world.
Ian Fleming could have met hundreds of people in Jamaica when he retired there to write the James Bond novels. He may have used the characteristics of many people to create Bond's psychological profile. I wouldn't be surprised if he did meet a Dominican man to aid him in creating a character for a story.